Average: 15.12 | Year: 2024
Average: 16.90 | Year: 2006
Average: 18.20 | Year: 1994
Average: 19.5 | Year: 2000
Average: 19.63 | Year: 1998
Average: 20.01 | Year: 2008
Average: 20.15 | Year: 1984
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